<!DOCTYPE html>












  


<html class="theme-next muse use-motion" lang>
<head><meta name="generator" content="Hexo 3.9.0">
  <meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=2">
<meta name="theme-color" content="#222">




  
  
    
    
  <script src="/lib/pace/pace.min.js?v=1.0.2"></script>
  <link rel="stylesheet" href="/lib/pace/pace-theme-minimal.min.css?v=1.0.2">







  <meta name="google-site-verification" content="true">







  <meta name="baidu-site-verification" content="true">











<link rel="stylesheet" href="/lib/font-awesome/css/font-awesome.min.css?v=4.6.2">

<link rel="stylesheet" href="/css/main.css?v=6.7.0">


  <link rel="apple-touch-icon" sizes="180x180" href="/images/apple-touch-icon-next.png?v=6.7.0">


  <link rel="icon" type="image/png" sizes="32x32" href="/images/favicon-32x32-next.png?v=6.7.0">


  <link rel="icon" type="image/png" sizes="16x16" href="/images/favicon-16x16-next.png?v=6.7.0">


  <link rel="mask-icon" href="/images/logo.svg?v=6.7.0" color="#222">







<script id="hexo.configurations">
  var NexT = window.NexT || {};
  var CONFIG = {
    root: '/',
    scheme: 'Muse',
    version: '6.7.0',
    sidebar: {"position":"left","display":"post","offset":12,"b2t":false,"scrollpercent":false,"onmobile":false},
    fancybox: false,
    fastclick: false,
    lazyload: false,
    tabs: true,
    motion: {"enable":true,"async":false,"transition":{"post_block":"fadeIn","post_header":"slideDownIn","post_body":"slideDownIn","coll_header":"slideLeftIn","sidebar":"slideUpIn"}},
    algolia: {
      applicationID: '',
      apiKey: '',
      indexName: '',
      hits: {"per_page":5},
      labels: {"input_placeholder":"Search for Posts","hits_empty":"We didn't find any results for the search: ${query}","hits_stats":"${hits} results found in ${time} ms"}
    }
  };
</script>


  





    <meta name="baidu-site-verification" content="8NezAkUO3s">


  <meta name="description" content="php operate filesystem">
<meta name="keywords" content="php,filesystem,os,path">
<meta property="og:type" content="article">
<meta property="og:title" content="PHP Filesystem">
<meta property="og:url" content="https://moonclearner.cn/php/php_get_path_filename.html">
<meta property="og:site_name" content="moonclearner page">
<meta property="og:description" content="php operate filesystem">
<meta property="og:locale" content="default">
<meta property="og:updated_time" content="2019-02-27T05:33:54.374Z">
<meta name="twitter:card" content="summary">
<meta name="twitter:title" content="PHP Filesystem">
<meta name="twitter:description" content="php operate filesystem">



  <link rel="alternate" href="/atom.xml" title="moonclearner page" type="application/atom+xml">




  <link rel="canonical" href="https://moonclearner.cn/php/php_get_path_filename.html">



<script id="page.configurations">
  CONFIG.page = {
    sidebar: "",
  };
</script>

  <title>PHP Filesystem | moonclearner page</title>
  












  <noscript>
  <style>
  .use-motion .motion-element,
  .use-motion .brand,
  .use-motion .menu-item,
  .sidebar-inner,
  .use-motion .post-block,
  .use-motion .pagination,
  .use-motion .comments,
  .use-motion .post-header,
  .use-motion .post-body,
  .use-motion .collection-title { opacity: initial; }

  .use-motion .logo,
  .use-motion .site-title,
  .use-motion .site-subtitle {
    opacity: initial;
    top: initial;
  }

  .use-motion .logo-line-before i { left: initial; }
  .use-motion .logo-line-after i { right: initial; }
  </style>
</noscript>

</head>

<body itemscope itemtype="http://schema.org/WebPage" lang="default">
  <div class="bg_content">
      <canvas id="canvas"></canvas>
  </div>

  
  
    
  

  <div class="container sidebar-position-left page-post-detail">
    <div class="headband"></div>
    <!--github-start-->
    <a href="https://github.com/moonclearner" class="github-corner" aria-label="View source on GitHub"><svg width="80" height="80" viewbox="0 0 250 250" style="fill:#151513; color:#fff; position: absolute; top: 0; border: 0; right: 0;" aria-hidden="true"><path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"/><path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"/><path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"/></svg></a><style>.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}</style>
    <!--github-end-->

    <header id="header" class="header" itemscope itemtype="http://schema.org/WPHeader">
      <div class="header-inner"><div class="site-brand-wrapper">
  <div class="site-meta">
    

    <div class="custom-logo-site-title">
      <a href="/" class="brand" rel="start">
        <span class="logo-line-before"><i></i></span>
        <span class="site-title">moonclearner page</span>
        <span class="logo-line-after"><i></i></span>
      </a>
    </div>
    
      
        <p class="site-subtitle">moonclearner blog</p>
      
    
    
  </div>

  <div class="site-nav-toggle">
    <button aria-label="Toggle navigation bar">
      <span class="btn-bar"></span>
      <span class="btn-bar"></span>
      <span class="btn-bar"></span>
    </button>
  </div>
</div>



<nav class="site-nav">
  
    <ul id="menu" class="menu">
      
        
        
        
          
          <li class="menu-item menu-item-home">

    
    
    
      
    

    

    <a href="/" rel="section"><i class="menu-item-icon fa fa-fw fa-home"></i> <br>Home</a>

  </li>
        
        
        
          
          <li class="menu-item menu-item-tags">

    
    
    
      
    

    

    <a href="/tags/" rel="section"><i class="menu-item-icon fa fa-fw fa-tags"></i> <br>Tags</a>

  </li>
        
        
        
          
          <li class="menu-item menu-item-categories">

    
    
    
      
    

    

    <a href="/categories/" rel="section"><i class="menu-item-icon fa fa-fw fa-th"></i> <br>Categories</a>

  </li>
        
        
        
          
          <li class="menu-item menu-item-archives">

    
    
    
      
    

    

    <a href="/archives/" rel="section"><i class="menu-item-icon fa fa-fw fa-archive"></i> <br>Archives</a>

  </li>
        
        
        
          
          <li class="menu-item menu-item-about">

    
    
    
      
    

    

    <a href="/about/" rel="section"><i class="menu-item-icon fa fa-fw fa-user"></i> <br>About</a>

  </li>
        
        
        
          
          <li class="menu-item menu-item-sitemap">

    
    
    
      
    

    

    <a href="/sitemap.xml" rel="section"><i class="menu-item-icon fa fa-fw fa-sitemap"></i> <br>Sitemap</a>

  </li>

      
      
        <li class="menu-item menu-item-search">
          
            <a href="javascript:;" class="popup-trigger">
          
            
              <i class="menu-item-icon fa fa-search fa-fw"></i> <br>Search</a>
        </li>
      
    </ul>
  

  
    

  

  
    <div class="site-search">
      
  <div class="popup search-popup local-search-popup">
  <div class="local-search-header clearfix">
    <span class="search-icon">
      <i class="fa fa-search"></i>
    </span>
    <span class="popup-btn-close">
      <i class="fa fa-times-circle"></i>
    </span>
    <div class="local-search-input-wrapper">
      <input autocomplete="off" placeholder="Searching..." spellcheck="false" type="text" id="local-search-input">
    </div>
  </div>
  <div id="local-search-result"></div>
</div>



    </div>
  
</nav>



  



</div>
    </header>

    


    <main id="main" class="main">
      <div class="main-inner">
        <div class="content-wrap">
          
          <div id="content" class="content">
            

  <div id="posts" class="posts-expand">
    

  

  
  
  

  

  <article class="post post-type-normal" itemscope itemtype="http://schema.org/Article">
  
  
  
  <div class="post-block">
    <link itemprop="mainEntityOfPage" href="https://moonclearner.cn/php/php_get_path_filename.html">

    <span hidden itemprop="author" itemscope itemtype="http://schema.org/Person">
      <meta itemprop="name" content="moonclearner">
      <meta itemprop="description" content="moonclearner record code skill and my feeling">
      <meta itemprop="image" content="/images/avatar.gif">
    </span>

    <span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization">
      <meta itemprop="name" content="moonclearner page">
    </span>

    
      <header class="post-header">

        
        
          <h1 class="post-title" itemprop="name headline">PHP Filesystem

              
            
          </h1>
        

        <div class="post-meta">
          <span class="post-time">

            
            
            

            
              <span class="post-meta-item-icon">
                <i class="fa fa-calendar-o"></i>
              </span>
              
                <span class="post-meta-item-text">Posted on</span>
              

              
                
              

              <time title="Created: 2021-07-18 19:28:32" itemprop="dateCreated datePublished" datetime="2021-07-18T19:28:32+08:00">2021-07-18</time>
            

            
              

              
                
                <span class="post-meta-divider">|</span>
                

                <span class="post-meta-item-icon">
                  <i class="fa fa-calendar-check-o"></i>
                </span>
                
                  <span class="post-meta-item-text">Edited on</span>
                
                <time title="Modified: 2019-02-27 13:33:54" itemprop="dateModified" datetime="2019-02-27T13:33:54+08:00">2019-02-27</time>
              
            
          </span>

          
            <span class="post-category">
            
              <span class="post-meta-divider">|</span>
            
              <span class="post-meta-item-icon">
                <i class="fa fa-folder-o"></i>
              </span>
              
                <span class="post-meta-item-text">In</span>
              
              
                <span itemprop="about" itemscope itemtype="http://schema.org/Thing"><a href="/categories/php/" itemprop="url" rel="index"><span itemprop="name">php</span></a></span>

                
                
              
            </span>
          

          
            
          

          
          

          

          
            <div class="post-symbolscount">
              

              
                <span class="post-meta-item-icon">
                  <i class="fa fa-file-word-o"></i>
                </span>
                
                  <span class="post-meta-item-text">Symbols count in article: </span>
                
                <span title="Symbols count in article">2.3k</span>
              

              
                <span class="post-meta-divider">|</span>
              

              
                <span class="post-meta-item-icon">
                  <i class="fa fa-clock-o"></i>
                </span>
                
                  <span class="post-meta-item-text">Reading time &asymp;</span>
                
                <span title="Reading time">2 mins.</span>
              
            </div>
          

          
              <div class="post-description">php operate filesystem</div>
          

        </div>
      </header>
    

    
    
    
    <div class="post-body" itemprop="articleBody">

      
      

      
        <h1 id="PHP-Filesystem"><a href="#PHP-Filesystem" class="headerlink" title="PHP Filesystem"></a>PHP Filesystem</h1><table>
<thead>
<tr>
<th style="text-align:left">函数</th>
<th style="text-align:left">描述</th>
<th style="text-align:left">PHP</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align:left">basename()</td>
<td style="text-align:left">返回路径中的文件名部分。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">chgrp()</td>
<td style="text-align:left">改变文件组。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">chmod()</td>
<td style="text-align:left">改变文件模式。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">chown()</td>
<td style="text-align:left">改变文件所有者。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">clearstatcache()</td>
<td style="text-align:left">清除文件状态缓存。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">copy()</td>
<td style="text-align:left">复制文件。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">delete()</td>
<td style="text-align:left">参见 unlink() 或 unset()。</td>
<td style="text-align:left"></td>
</tr>
<tr>
<td style="text-align:left">dirname()</td>
<td style="text-align:left">返回路径中的目录名称部分。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">disk_free_space()</td>
<td style="text-align:left">返回目录的可用空间。</td>
<td style="text-align:left">4</td>
</tr>
<tr>
<td style="text-align:left">disk_total_space()</td>
<td style="text-align:left">返回一个目录的磁盘总容量。</td>
<td style="text-align:left">4</td>
</tr>
<tr>
<td style="text-align:left">diskfreespace()</td>
<td style="text-align:left">disk_free_space() 的别名。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">fclose()</td>
<td style="text-align:left">关闭打开的文件。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">feof()</td>
<td style="text-align:left">测试文件指针是否到了文件结束的位置。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">fflush()</td>
<td style="text-align:left">向打开的文件输出缓冲内容。</td>
<td style="text-align:left">4</td>
</tr>
<tr>
<td style="text-align:left">fgetc()</td>
<td style="text-align:left">从打开的文件中返回字符。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">fgetcsv()</td>
<td style="text-align:left">从打开的文件中解析一行，校验 CSV 字段。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">fgets()</td>
<td style="text-align:left">从打开的文件中返回一行。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">fgetss()</td>
<td style="text-align:left">从打开的文件中读取一行并过滤掉 HTML 和 PHP 标记。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">file()</td>
<td style="text-align:left">把文件读入一个数组中。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">file_exists()</td>
<td style="text-align:left">检查文件或目录是否存在。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">file_get_contents()</td>
<td style="text-align:left">将文件读入字符串。</td>
<td style="text-align:left">4</td>
</tr>
<tr>
<td style="text-align:left">file_put_contents()</td>
<td style="text-align:left">将字符串写入文件。</td>
<td style="text-align:left">5</td>
</tr>
<tr>
<td style="text-align:left">fileatime()</td>
<td style="text-align:left">返回文件的上次访问时间。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">filectime()</td>
<td style="text-align:left">返回文件的上次改变时间。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">filegroup()</td>
<td style="text-align:left">返回文件的组 ID。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">fileinode()</td>
<td style="text-align:left">返回文件的 inode 编号。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">filemtime()</td>
<td style="text-align:left">返回文件的上次修改时间。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">fileowner()</td>
<td style="text-align:left">文件的 user ID （所有者）。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">fileperms()</td>
<td style="text-align:left">返回文件的权限。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">filesize()</td>
<td style="text-align:left">返回文件大小。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">filetype()</td>
<td style="text-align:left">返回文件类型。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">flock()</td>
<td style="text-align:left">锁定或释放文件。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">fnmatch()</td>
<td style="text-align:left">根据指定的模式来匹配文件名或字符串。</td>
<td style="text-align:left">4</td>
</tr>
<tr>
<td style="text-align:left">fopen()</td>
<td style="text-align:left">打开一个文件或 URL。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">fpassthru()</td>
<td style="text-align:left">从打开的文件中读数据，直到 EOF，并向输出缓冲写结果。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">fputcsv()</td>
<td style="text-align:left">将行格式化为 CSV 并写入一个打开的文件中。</td>
<td style="text-align:left">5</td>
</tr>
<tr>
<td style="text-align:left">fputs()</td>
<td style="text-align:left">fwrite() 的别名。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">fread()</td>
<td style="text-align:left">读取打开的文件。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">fscanf()</td>
<td style="text-align:left">根据指定的格式对输入进行解析。</td>
<td style="text-align:left">4</td>
</tr>
<tr>
<td style="text-align:left">fseek()</td>
<td style="text-align:left">在打开的文件中定位。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">fstat()</td>
<td style="text-align:left">返回关于一个打开的文件的信息。</td>
<td style="text-align:left">4</td>
</tr>
<tr>
<td style="text-align:left">ftell()</td>
<td style="text-align:left">返回文件指针的读/写位置</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">ftruncate()</td>
<td style="text-align:left">将文件截断到指定的长度。</td>
<td style="text-align:left">4</td>
</tr>
<tr>
<td style="text-align:left">fwrite()</td>
<td style="text-align:left">写入文件。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">glob()</td>
<td style="text-align:left">返回一个包含匹配指定模式的文件名/目录的数组。</td>
<td style="text-align:left">4</td>
</tr>
<tr>
<td style="text-align:left">is_dir()</td>
<td style="text-align:left">判断指定的文件名是否是一个目录。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">is_executable()</td>
<td style="text-align:left">判断文件是否可执行。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">is_file()</td>
<td style="text-align:left">判断指定文件是否为常规的文件。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">is_link()</td>
<td style="text-align:left">判断指定的文件是否是连接。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">is_readable()</td>
<td style="text-align:left">判断文件是否可读。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">is_uploaded_file()</td>
<td style="text-align:left">判断文件是否是通过 HTTP POST 上传的。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">is_writable()</td>
<td style="text-align:left">判断文件是否可写。</td>
<td style="text-align:left">4</td>
</tr>
<tr>
<td style="text-align:left">is_writeable()</td>
<td style="text-align:left">is_writable() 的别名。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">link()</td>
<td style="text-align:left">创建一个硬连接。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">linkinfo()</td>
<td style="text-align:left">返回有关一个硬连接的信息。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">lstat()</td>
<td style="text-align:left">返回关于文件或符号连接的信息。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">mkdir()</td>
<td style="text-align:left">创建目录。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">move_uploaded_file()</td>
<td style="text-align:left">将上传的文件移动到新位置。</td>
<td style="text-align:left">4</td>
</tr>
<tr>
<td style="text-align:left">parse_ini_file()</td>
<td style="text-align:left">解析一个配置文件。</td>
<td style="text-align:left">4</td>
</tr>
<tr>
<td style="text-align:left">pathinfo()</td>
<td style="text-align:left">返回关于文件路径的信息。</td>
<td style="text-align:left">4</td>
</tr>
<tr>
<td style="text-align:left">pclose()</td>
<td style="text-align:left">关闭有 popen() 打开的进程。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">popen()</td>
<td style="text-align:left">打开一个进程。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">readfile()</td>
<td style="text-align:left">读取一个文件，并输出到输出缓冲。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">readlink()</td>
<td style="text-align:left">返回符号连接的目标。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">realpath()</td>
<td style="text-align:left">返回绝对路径名。</td>
<td style="text-align:left">4</td>
</tr>
<tr>
<td style="text-align:left">rename()</td>
<td style="text-align:left">重名名文件或目录。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">rewind()</td>
<td style="text-align:left">倒回文件指针的位置。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">rmdir()</td>
<td style="text-align:left">删除空的目录。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">set_file_buffer()</td>
<td style="text-align:left">设置已打开文件的缓冲大小。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">stat()</td>
<td style="text-align:left">返回关于文件的信息。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">symlink()</td>
<td style="text-align:left">创建符号连接。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">tempnam()</td>
<td style="text-align:left">创建唯一的临时文件。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">tmpfile()</td>
<td style="text-align:left">建立临时文件。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">touch()</td>
<td style="text-align:left">设置文件的访问和修改时间。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">umask()</td>
<td style="text-align:left">改变文件的文件权限。</td>
<td style="text-align:left">3</td>
</tr>
<tr>
<td style="text-align:left">unlink()</td>
<td style="text-align:left">删除文件。</td>
<td style="text-align:left">3</td>
</tr>
</tbody>
</table>
<h1 id="compatibility"><a href="#compatibility" class="headerlink" title="compatibility"></a>compatibility</h1><p>当在 Unix 平台上规定路径时，正斜杠 (/) 用作目录分隔符。而在 Windows 平台上，正斜杠 (/) 和反斜杠 () 均可使用。</p>

      
    </div>

    


    
    
    
    
      <div>
        
<div class="my_post_copyright">
  <script src="//cdn.bootcss.com/clipboard.js/1.5.10/clipboard.min.js"></script>
  <!-- JS库 sweetalert 可修改路径 -->
  <script src="https://cdn.bootcss.com/jquery/2.0.0/jquery.min.js"></script>
  <script src="https://unpkg.com/sweetalert/dist/sweetalert.min.js"></script>
  <p><span>本文标题:</span><a href="/php/php_get_path_filename.html">PHP Filesystem</a></p>
  <p><span>文章作者:</span><a href="/" title="访问 moonclearner 的个人博客">moonclearner</a></p>
  <p><span>发布时间:</span>2021年07月18日 - 19:28</p>
  <p><span>最后更新:</span>2019年02月27日 - 13:33</p>
  <p><span>原始链接:</span><a href="/php/php_get_path_filename.html" title="PHP Filesystem">https://moonclearner.cn/php/php_get_path_filename.html</a>
    <span class="copy-path" title="点击复制文章链接"><i class="fa fa-clipboard" data-clipboard-text="https://moonclearner.cn/php/php_get_path_filename.html" aria-label="复制成功！"></i></span>
  </p>
  <p><span>许可协议:</span><i class="fa fa-creative-commons"></i> <a rel="license" href="https://creativecommons.org/licenses/by-nc-nd/4.0/" target="_blank" title="Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)">署名-非商业性使用-禁止演绎 4.0 国际</a> 转载请保留原文链接及作者。</p>  
</div>
<script> 
    var clipboard = new Clipboard('.fa-clipboard');
    $(".fa-clipboard").click(function(){
      clipboard.on('success', function(){
        swal({
          title: "",
          text: '复制成功',
          icon: "success",
          showConfirmButton: true
          });
      });
    }); 
</script>


      </div>
    

    

    
      
    
    

    

    <footer class="post-footer">
      
        <div class="post-tags">
          
            <a href="/tags/php/" rel="tag"><i class="fa fa-tag"></i> php</a>
          
            <a href="/tags/os/" rel="tag"><i class="fa fa-tag"></i> os</a>
          
            <a href="/tags/filesystem/" rel="tag"><i class="fa fa-tag"></i> filesystem</a>
          
        </div>
      

      
      
      

      
        <div class="post-nav">
          <div class="post-nav-next post-nav-item">
            
              <a href="/php/php_quotes.html" rel="next" title="PHP quotes">
                <i class="fa fa-chevron-left"></i> PHP quotes
              </a>
            
          </div>

          <span class="post-nav-divider"></span>

          <div class="post-nav-prev post-nav-item">
            
              <a href="/php/php_ipv6.html" rel="prev" title="PHP ipv6">
                PHP ipv6 <i class="fa fa-chevron-right"></i>
              </a>
            
          </div>
        </div>
      

      
      
    </footer>
  </div>
  
  
  
  </article>


  </div>


          </div>
          

  
    <div id="gitalk-container">
    </div>
    
  



        </div>
        
          
  
  <div class="sidebar-toggle">
    <div class="sidebar-toggle-line-wrap">
      <span class="sidebar-toggle-line sidebar-toggle-line-first"></span>
      <span class="sidebar-toggle-line sidebar-toggle-line-middle"></span>
      <span class="sidebar-toggle-line sidebar-toggle-line-last"></span>
    </div>
  </div>

  <aside id="sidebar" class="sidebar">
    
    <div class="sidebar-inner">

      

      
        <ul class="sidebar-nav motion-element">
          <li class="sidebar-nav-toc sidebar-nav-active" data-target="post-toc-wrap">
            Table of Contents
          </li>
          <li class="sidebar-nav-overview" data-target="site-overview-wrap">
            Overview
          </li>
        </ul>
      

      <div class="site-overview-wrap sidebar-panel">
        <div class="site-overview">
          <div class="site-author motion-element" itemprop="author" itemscope itemtype="http://schema.org/Person">
            
              <p class="site-author-name" itemprop="name">moonclearner</p>
              <p class="site-description motion-element" itemprop="description">moonclearner record code skill and my feeling</p>
          </div>

          
            <nav class="site-state motion-element">
              
                <div class="site-state-item site-state-posts">
                
                  <a href="/archives/">
                
                    <span class="site-state-item-count">109</span>
                    <span class="site-state-item-name">posts</span>
                  </a>
                </div>
              

              
                
                
                <div class="site-state-item site-state-categories">
                  <a href="/categories/index.html">
                    
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                    <span class="site-state-item-count">29</span>
                    <span class="site-state-item-name">categories</span>
                  </a>
                </div>
              

              
                
                
                <div class="site-state-item site-state-tags">
                  <a href="/tags/index.html">
                    
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                      
                    
                    <span class="site-state-item-count">55</span>
                    <span class="site-state-item-name">tags</span>
                  </a>
                </div>
              
            </nav>
          

          
            <div class="feed-link motion-element">
              <a href="/atom.xml" rel="alternate">
                <i class="fa fa-rss"></i>
                RSS
              </a>
            </div>
          

          
            <div class="links-of-author motion-element">
              
                <span class="links-of-author-item">
                  
                  
                    
                  
                  
                    
                  
                  <a href="https://github.com/moonclearner" title="GitHub &rarr; https://github.com/moonclearner" rel="noopener" target="_blank"><i class="fa fa-fw fa-github"></i>GitHub</a>
                </span>
              
                <span class="links-of-author-item">
                  
                  
                    
                  
                  
                    
                  
                  <a href="mailto:moonclearner@qq.com" title="E-Mail &rarr; mailto:moonclearner@qq.com" rel="noopener" target="_blank"><i class="fa fa-fw fa-envelope"></i>E-Mail</a>
                </span>
              
            </div>
          

          

          
          

          
            
          
          

        </div>
      </div>

      
      <!--noindex-->
        <div class="post-toc-wrap motion-element sidebar-panel sidebar-panel-active">
          <div class="post-toc">

            
            
            
            

            
              <div class="post-toc-content"><ol class="nav"><li class="nav-item nav-level-1"><a class="nav-link" href="#PHP-Filesystem"><span class="nav-number">1.</span> <span class="nav-text">PHP Filesystem</span></a></li><li class="nav-item nav-level-1"><a class="nav-link" href="#compatibility"><span class="nav-number">2.</span> <span class="nav-text">compatibility</span></a></li></ol></div>
            

          </div>
        </div>
      <!--/noindex-->
      

      

    </div>
  </aside>


        
      </div>
    </main>

    <footer id="footer" class="footer">
      <div class="footer-inner">
        <script async src="https://busuanzi.ibruce.info/busuanzi/2.3/busuanzi.pure.mini.js"></script>
<div class="copyright">&copy; <span itemprop="copyrightYear">2021</span>
  <span class="with-love" id="animate">
    <i class="fa fa-user"></i>
  </span>
  <span class="author" itemprop="copyrightHolder">moonclearner</span>

  
    <span class="post-meta-divider">|</span>
    <span class="post-meta-item-icon">
      <i class="fa fa-area-chart"></i>
    </span>
    
    <span title="Symbols count total">162k</span>
  

  
    <span class="post-meta-divider">|</span>
    <span class="post-meta-item-icon">
      <i class="fa fa-coffee"></i>
    </span>
    
    <span title="Reading time total">2:28</span>
  
</div>









<div class="theme-info">
  <div class="powered-by"></div>
  <span class="post-count">博客全站共字</span>
</div>

<div class="powered-by">
<i class="fa fa-user-md"></i><span id="busuanzi_container_site_uv">
  本站访客数:<span id="busuanzi_value_site_uv"></span>
</span>
</div>

        








        
      </div>
    </footer>

    
      <div class="back-to-top">
        <i class="fa fa-arrow-up"></i>
        
      </div>
    

    

    

    
  </div>

  

<script>
  if (Object.prototype.toString.call(window.Promise) !== '[object Function]') {
    window.Promise = null;
  }
</script>


























  
  <script src="/lib/jquery/index.js?v=2.1.3"></script>

  
  <script src="/lib/velocity/velocity.min.js?v=1.2.1"></script>

  
  <script src="/lib/velocity/velocity.ui.min.js?v=1.2.1"></script>


  


  <script src="/js/src/utils.js?v=6.7.0"></script>

  <script src="/js/src/motion.js?v=6.7.0"></script>



  
  

  
  <script src="/js/src/scrollspy.js?v=6.7.0"></script>
<script src="/js/src/post-details.js?v=6.7.0"></script>



  


  <script src="/js/src/bootstrap.js?v=6.7.0"></script>



  



  











  
  
  <script src="//cdn.jsdelivr.net/npm/gitalk@1.4.0/dist/gitalk.min.js"></script>

  
  
  <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/gitalk@1.4.0/dist/gitalk.css">

  
  
  <script src="//cdn.jsdelivr.net/npm/js-md5@0.7.3/src/md5.min.js"></script>

   <script>
        var gitalk = new Gitalk({
          clientID: 'e47bf4fb4f5f701fc3a6',
          clientSecret: '9155535868459f5a16e1180edee3a495ecc8eb71',
          repo: 'moonclearner.github.io',
          owner: 'moonclearner',
          admin: ['moonclearner'],
          id: md5(location.pathname),
          distractionFreeMode: 'true'
        })
        gitalk.render('gitalk-container')
       </script>


  

  <script>
    // Popup Window;
    var isfetched = false;
    var isXml = true;
    // Search DB path;
    var search_path = "search.xml";
    if (search_path.length === 0) {
      search_path = "search.xml";
    } else if (/json$/i.test(search_path)) {
      isXml = false;
    }
    var path = "/" + search_path;
    // monitor main search box;

    var onPopupClose = function (e) {
      $('.popup').hide();
      $('#local-search-input').val('');
      $('.search-result-list').remove();
      $('#no-result').remove();
      $(".local-search-pop-overlay").remove();
      $('body').css('overflow', '');
    }

    function proceedsearch() {
      $("body")
        .append('<div class="search-popup-overlay local-search-pop-overlay"></div>')
        .css('overflow', 'hidden');
      $('.search-popup-overlay').click(onPopupClose);
      $('.popup').toggle();
      var $localSearchInput = $('#local-search-input');
      $localSearchInput.attr("autocapitalize", "none");
      $localSearchInput.attr("autocorrect", "off");
      $localSearchInput.focus();
    }

    // search function;
    var searchFunc = function(path, search_id, content_id) {
      'use strict';

      // start loading animation
      $("body")
        .append('<div class="search-popup-overlay local-search-pop-overlay">' +
          '<div id="search-loading-icon">' +
          '<i class="fa fa-spinner fa-pulse fa-5x fa-fw"></i>' +
          '</div>' +
          '</div>')
        .css('overflow', 'hidden');
      $("#search-loading-icon").css('margin', '20% auto 0 auto').css('text-align', 'center');

      

      $.ajax({
        url: path,
        dataType: isXml ? "xml" : "json",
        async: true,
        success: function(res) {
          // get the contents from search data
          isfetched = true;
          $('.popup').detach().appendTo('.header-inner');
          var datas = isXml ? $("entry", res).map(function() {
            return {
              title: $("title", this).text(),
              content: $("content",this).text(),
              url: $("url" , this).text()
            };
          }).get() : res;
          var input = document.getElementById(search_id);
          var resultContent = document.getElementById(content_id);
          var inputEventFunction = function() {
            var searchText = input.value.trim().toLowerCase();
            var keywords = searchText.split(/[\s\-]+/);
            if (keywords.length > 1) {
              keywords.push(searchText);
            }
            var resultItems = [];
            if (searchText.length > 0) {
              // perform local searching
              datas.forEach(function(data) {
                var isMatch = false;
                var hitCount = 0;
                var searchTextCount = 0;
                var title = data.title.trim();
                var titleInLowerCase = title.toLowerCase();
                var content = data.content.trim().replace(/<[^>]+>/g,"");
                
                var contentInLowerCase = content.toLowerCase();
                var articleUrl = decodeURIComponent(data.url).replace(/\/{2,}/g, '/');
                var indexOfTitle = [];
                var indexOfContent = [];
                // only match articles with not empty titles
                if(title != '') {
                  keywords.forEach(function(keyword) {
                    function getIndexByWord(word, text, caseSensitive) {
                      var wordLen = word.length;
                      if (wordLen === 0) {
                        return [];
                      }
                      var startPosition = 0, position = [], index = [];
                      if (!caseSensitive) {
                        text = text.toLowerCase();
                        word = word.toLowerCase();
                      }
                      while ((position = text.indexOf(word, startPosition)) > -1) {
                        index.push({position: position, word: word});
                        startPosition = position + wordLen;
                      }
                      return index;
                    }

                    indexOfTitle = indexOfTitle.concat(getIndexByWord(keyword, titleInLowerCase, false));
                    indexOfContent = indexOfContent.concat(getIndexByWord(keyword, contentInLowerCase, false));
                  });
                  if (indexOfTitle.length > 0 || indexOfContent.length > 0) {
                    isMatch = true;
                    hitCount = indexOfTitle.length + indexOfContent.length;
                  }
                }

                // show search results

                if (isMatch) {
                  // sort index by position of keyword

                  [indexOfTitle, indexOfContent].forEach(function (index) {
                    index.sort(function (itemLeft, itemRight) {
                      if (itemRight.position !== itemLeft.position) {
                        return itemRight.position - itemLeft.position;
                      } else {
                        return itemLeft.word.length - itemRight.word.length;
                      }
                    });
                  });

                  // merge hits into slices

                  function mergeIntoSlice(text, start, end, index) {
                    var item = index[index.length - 1];
                    var position = item.position;
                    var word = item.word;
                    var hits = [];
                    var searchTextCountInSlice = 0;
                    while (position + word.length <= end && index.length != 0) {
                      if (word === searchText) {
                        searchTextCountInSlice++;
                      }
                      hits.push({position: position, length: word.length});
                      var wordEnd = position + word.length;

                      // move to next position of hit

                      index.pop();
                      while (index.length != 0) {
                        item = index[index.length - 1];
                        position = item.position;
                        word = item.word;
                        if (wordEnd > position) {
                          index.pop();
                        } else {
                          break;
                        }
                      }
                    }
                    searchTextCount += searchTextCountInSlice;
                    return {
                      hits: hits,
                      start: start,
                      end: end,
                      searchTextCount: searchTextCountInSlice
                    };
                  }

                  var slicesOfTitle = [];
                  if (indexOfTitle.length != 0) {
                    slicesOfTitle.push(mergeIntoSlice(title, 0, title.length, indexOfTitle));
                  }

                  var slicesOfContent = [];
                  while (indexOfContent.length != 0) {
                    var item = indexOfContent[indexOfContent.length - 1];
                    var position = item.position;
                    var word = item.word;
                    // cut out 100 characters
                    var start = position - 20;
                    var end = position + 80;
                    if(start < 0){
                      start = 0;
                    }
                    if (end < position + word.length) {
                      end = position + word.length;
                    }
                    if(end > content.length){
                      end = content.length;
                    }
                    slicesOfContent.push(mergeIntoSlice(content, start, end, indexOfContent));
                  }

                  // sort slices in content by search text's count and hits' count

                  slicesOfContent.sort(function (sliceLeft, sliceRight) {
                    if (sliceLeft.searchTextCount !== sliceRight.searchTextCount) {
                      return sliceRight.searchTextCount - sliceLeft.searchTextCount;
                    } else if (sliceLeft.hits.length !== sliceRight.hits.length) {
                      return sliceRight.hits.length - sliceLeft.hits.length;
                    } else {
                      return sliceLeft.start - sliceRight.start;
                    }
                  });

                  // select top N slices in content

                  var upperBound = parseInt('1');
                  if (upperBound >= 0) {
                    slicesOfContent = slicesOfContent.slice(0, upperBound);
                  }

                  // highlight title and content

                  function highlightKeyword(text, slice) {
                    var result = '';
                    var prevEnd = slice.start;
                    slice.hits.forEach(function (hit) {
                      result += text.substring(prevEnd, hit.position);
                      var end = hit.position + hit.length;
                      result += '<b class="search-keyword">' + text.substring(hit.position, end) + '</b>';
                      prevEnd = end;
                    });
                    result += text.substring(prevEnd, slice.end);
                    return result;
                  }

                  var resultItem = '';

                  if (slicesOfTitle.length != 0) {
                    resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + highlightKeyword(title, slicesOfTitle[0]) + "</a>";
                  } else {
                    resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + title + "</a>";
                  }

                  slicesOfContent.forEach(function (slice) {
                    resultItem += "<a href='" + articleUrl + "'>" +
                      "<p class=\"search-result\">" + highlightKeyword(content, slice) +
                      "...</p>" + "</a>";
                  });

                  resultItem += "</li>";
                  resultItems.push({
                    item: resultItem,
                    searchTextCount: searchTextCount,
                    hitCount: hitCount,
                    id: resultItems.length
                  });
                }
              })
            };
            if (keywords.length === 1 && keywords[0] === "") {
              resultContent.innerHTML = '<div id="no-result"><i class="fa fa-search fa-5x"></i></div>'
            } else if (resultItems.length === 0) {
              resultContent.innerHTML = '<div id="no-result"><i class="fa fa-frown-o fa-5x"></i></div>'
            } else {
              resultItems.sort(function (resultLeft, resultRight) {
                if (resultLeft.searchTextCount !== resultRight.searchTextCount) {
                  return resultRight.searchTextCount - resultLeft.searchTextCount;
                } else if (resultLeft.hitCount !== resultRight.hitCount) {
                  return resultRight.hitCount - resultLeft.hitCount;
                } else {
                  return resultRight.id - resultLeft.id;
                }
              });
              var searchResultList = '<ul class=\"search-result-list\">';
              resultItems.forEach(function (result) {
                searchResultList += result.item;
              })
              searchResultList += "</ul>";
              resultContent.innerHTML = searchResultList;
            }
          }

          if ('auto' === 'auto') {
            input.addEventListener('input', inputEventFunction);
          } else {
            $('.search-icon').click(inputEventFunction);
            input.addEventListener('keypress', function (event) {
              if (event.keyCode === 13) {
                inputEventFunction();
              }
            });
          }

          // remove loading animation
          $(".local-search-pop-overlay").remove();
          $('body').css('overflow', '');

          proceedsearch();
        }
      });
    }

    // handle and trigger popup window;
    $('.popup-trigger').click(function(e) {
      e.stopPropagation();
      if (isfetched === false) {
        searchFunc(path, 'local-search-input', 'local-search-result');
      } else {
        proceedsearch();
      };
    });

    $('.popup-btn-close').click(onPopupClose);
    $('.popup').click(function(e){
      e.stopPropagation();
    });
    $(document).on('keyup', function (event) {
      var shouldDismissSearchPopup = event.which === 27 &&
        $('.search-popup').is(':visible');
      if (shouldDismissSearchPopup) {
        onPopupClose();
      }
    });
  </script>





  

  

  
  <script>
    (function(){
      var bp = document.createElement('script');
      var curProtocol = window.location.protocol.split(':')[0];
      if (curProtocol === 'https') {
        bp.src = 'https://zz.bdstatic.com/linksubmit/push.js';        
      }
      else {
        bp.src = 'http://push.zhanzhang.baidu.com/push.js';
      }
      var s = document.getElementsByTagName("script")[0];
      s.parentNode.insertBefore(bp, s);
    })();
  </script>


  

  

  

  

  

  

  

  

  

  

</body>
<script type="text/javascript" src="/js/src/dynamic_bg.js"></script>
<script src="https://cdn.jsdelivr.net/gh/moonclearner/live2d-widget/autoload.js"></script>
</html>
